I built a test iron of the first generation STi head.  I have the full set to build.   I appears that I’m just leaving the clubface open slightly at impact.  I’ve never played irons with this big of a C dimension.  Is it a bit harder to square the face with an iron like that?  If so, maybe that’s why they typically have more offset than this one?  BTW I do like the iron a lot.  Super forgiving and high flying.

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